1. It hasn't happened in Europe - easyjet, ryanair fly short sectors around western Europe. Not even after the collapse of transatlantic market post 9/11 did they try to have a go.
Look at your own question 2 for the answer to this one. Also anything over 3.5 hours means the A319's & B737 start to lose their cost efficiencies.
2. Fact is from a pax point of view you can stick no frills for short trips but anything more than 3 hour flights I'd say that the public want a full service.
easyJet's longest sector is 3.5 hours between Athens and London. Jo'burg and Cape Town are not the only options for Kulula bases .
3. Easyjet and Ryanair cannot be booked through travel agents - that's one of the savings they make as they don't have to pay commission to travel agents.
Correct.
If Kulula was divorced by Comair there are numerous expenses that they would incur from having to set up a new crewing department, recurrent training, new finance departments, new HR departments, new maintenance contracts, etc.
....yes but image the cost savings that they could made by moving away from the high cost infrastructure that Comair has in place, and only paying for the products that they actually use!!